/* 核心样式变量 */
        :root {
            --primary-color: #ffb600;
            --primary-dark: #e6a400;
            --dark-color: #1a1a1a;
            --border-color: #e0e0e0;
            --light-color: #f8f9fa;
        }
        
        /* 动画关键帧 */
        @keyframes fadeInUp {
            from {
                opacity: 0;
                transform: translateY(20px);
            }
            to {
                opacity: 1;
                transform: translateY(0);
            }
        }
        
        @keyframes slideInLeft {
            from {
                transform: translateX(-30px);
                opacity: 0;
            }
            to {
                transform: translateX(0);
                opacity: 1;
            }
        }
        
        @keyframes underlineExpand {
            from {
                width: 0;
            }
            to {
                width: 100%;
            }
        }
        
        @keyframes fadeIn {
            from {
                opacity: 0;
            }
            to {
                opacity: 1;
            }
        }
        
        /* 主容器 */
        .page-download-wrapper #main-container.main-container {
            margin: 0 0 30px !important;
            padding: 0 !important;
        }
        
        /* 面包屑导航容器 */
        .page-download-wrapper .breadcrumb-container {
            padding: 15px 0;
            border-bottom: 1px solid #eee;
            margin-bottom: 20px;
            animation: fadeInUp 0.6s ease-out 0.4s both;
            opacity: 0;
        }
        
        .page-download-wrapper .breadcrumb-container nav {
            background: transparent;
            padding: 0;
            margin: 0;
        }
        
        .page-download-wrapper .breadcrumb-container .breadcrumb {
            background: transparent;
            padding: 0;
            margin: 0;
        }
        
        .page-download-wrapper .breadcrumb-container .breadcrumb-item a {
            color: #666;
        }
        
        .page-download-wrapper .breadcrumb-container .breadcrumb-item.active {
            color: #333;
        }
        
        .page-download-wrapper .breadcrumb-container .breadcrumb-item + .breadcrumb-item::before {
            content: " / ";
            color: #999;
        }
        
        /* 横幅样式 */
        .page-download-wrapper .banner-area {
            position: relative;
            height: 300px;
            background-size: cover;
            background-position: center;
            width: 100%;
            overflow: hidden;
            display: flex;
            align-items: center;
        }
        
        .page-download-wrapper .banner-overlay {
            position: absolute;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            background: linear-gradient(to right, rgba(0,0,0,0.7) 0%, rgba(0,0,0,0.5) 40%, rgba(0,0,0,0.2) 80%, rgba(0,0,0,0) 100%);
        }
        
        /* 横幅内容容器 */
        .page-download-wrapper .banner-container {
            width: 100%;
        }
        
        .page-download-wrapper .banner-content {
            position: relative;
            z-index: 2;
            color: white;
            text-align: left;
            padding: 0 15px;
        }
        
        /* 修改标题样式 - 添加黄色下划线 */
        .page-download-wrapper .banner-title {
            font-size: 2.2rem;
            font-weight: 700;
            margin-bottom: 8px;
            text-shadow: 2px 2px 8px rgba(0,0,0,0.3);
            position: relative;
            display: inline-block;
            padding-bottom: 15px;
            animation: slideInLeft 0.8s ease-out 0.3s both;
            opacity: 0;
        }
        
        /* 黄色下划线 */
        .page-download-wrapper .banner-title::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            width: 0;
            height: 4px;
            background: var(--primary-color);
            border-radius: 2px;
            animation: underlineExpand 0.6s ease-out 1.1s forwards;
        }
        
        .page-download-wrapper .banner-description {
            font-size: 1rem;
            opacity: 0.9;
            text-shadow: 1px 1px 4px rgba(0,0,0,0.3);
            animation: fadeInUp 0.8s ease-out 0.5s both;
            opacity: 0;
        }
        
        /* 页面加载时的整体淡入效果 */
        .page-download-wrapper {
            animation: fadeIn 0.5s ease-out;
        }
        
        /* 搜索和筛选区域动画 */
        .page-download .search-section {
            background: white;
            padding: 25px 30px;
            margin-bottom: 25px;
            box-shadow: 0 2px 8px rgba(0,0,0,0.08);
            border: 1px solid var(--border-color);
            width: 100%;
            animation: fadeInUp 0.6s ease-out 0.7s both;
            opacity: 0;
        }
        
        /* 表格行动画 */
        .page-download .file-row {
            animation: fadeInUp 0.5s ease-out;
            opacity: 0;
            animation-fill-mode: forwards;
        }
        
        /* 为每个表格行设置延迟动画 */
        .page-download .file-row:nth-child(1) { animation-delay: 0.1s; }
        .page-download .file-row:nth-child(2) { animation-delay: 0.2s; }
        .page-download .file-row:nth-child(3) { animation-delay: 0.3s; }
        .page-download .file-row:nth-child(4) { animation-delay: 0.4s; }
        .page-download .file-row:nth-child(5) { animation-delay: 0.5s; }
        .page-download .file-row:nth-child(6) { animation-delay: 0.6s; }
        .page-download .file-row:nth-child(7) { animation-delay: 0.7s; }
        .page-download .file-row:nth-child(8) { animation-delay: 0.8s; }
        .page-download .file-row:nth-child(9) { animation-delay: 0.9s; }
        .page-download .file-row:nth-child(10) { animation-delay: 1.0s; }
        
        /* 移动端卡片动画 */
        .page-download .file-card {
            background: white;
            border: 1px solid var(--border-color);
            border-radius: 0px;
            padding: 20px;
            margin-bottom: 15px;
            box-shadow: 0 2px 8px rgba(0,0,0,0.08);
            animation: fadeInUp 0.5s ease-out;
            opacity: 0;
            animation-fill-mode: forwards;
        }
        
        /* 为每个移动端卡片设置延迟动画 */
        .page-download .file-card:nth-child(1) { animation-delay: 0.1s; }
        .page-download .file-card:nth-child(2) { animation-delay: 0.2s; }
        .page-download .file-card:nth-child(3) { animation-delay: 0.3s; }
        .page-download .file-card:nth-child(4) { animation-delay: 0.4s; }
        .page-download .file-card:nth-child(5) { animation-delay: 0.5s; }
        .page-download .file-card:nth-child(6) { animation-delay: 0.6s; }
        .page-download .file-card:nth-child(7) { animation-delay: 0.7s; }
        .page-download .file-card:nth-child(8) { animation-delay: 0.8s; }
        .page-download .file-card:nth-child(9) { animation-delay: 0.9s; }
        .page-download .file-card:nth-child(10) { animation-delay: 1.0s; }
        
        /* 下载页面内容容器 */
        .page-download {
            width: 100%;
        }
        
        .page-download .search-row {
            display: flex;
            align-items: center;
            gap: 20px;
            flex-wrap: nowrap;
            width: 100%;
        }
        
        .page-download .search-input-wrapper {
            flex: 1;
            min-width: 300px;
            position: relative;
        }
        
        /* 搜索框样式 */
        .page-download .search-input-wrapper input {
            width: 100%;
            padding: 12px 50px 12px 20px;
            border: 2px solid var(--border-color);
            font-size: 1rem;
            transition: all 0.3s ease;
            box-sizing: border-box;
            border-radius: 0px;
        }
        
        .page-download .search-input-wrapper input:focus {
            outline: none;
            border-color: var(--primary-color);
            box-shadow: 0 0 0 3px rgba(255, 182, 0, 0.1);
        }
        
        /* 搜索按钮样式 */
        .page-download .search-icon-btn {
            position: absolute;
            right: 0;
            top: 0;
            height: 100%;
            width: 50px;
            background: transparent;
            border: none;
            color: #999;
            cursor: pointer;
            font-size: 1.1rem;
            transition: all 0.3s ease;
            display: flex;
            align-items: center;
            justify-content: center;
        }
        
        .page-download .search-icon-btn:hover {
            color: var(--primary-color);
        }
        
        .page-download .search-icon-btn:active {
            transform: scale(0.9);
        }
        
        .page-download .filter-buttons {
            display: flex;
            gap: 8px;
            flex-shrink: 0;
            flex-wrap: wrap;
        }
        
        .page-download .filter-btn {
            flex-shrink: 0;
            padding: 10px 20px;
            background: var(--light-color);
            border: 2px solid var(--border-color);
            color: #666;
            cursor: pointer;
            transition: all 0.3s ease;
            font-size: 0.95rem;
            white-space: nowrap;
            border-radius: 0px;
        }
        
        .page-download .filter-btn:hover {
            border-color: var(--primary-color);
        }
        
        .page-download .filter-btn.active {
            background: var(--primary-color);
            border-color: var(--primary-color);
            color: #fff;
            font-weight: 500;
        }
        
        /* 文件表格容器 */
        .page-download .table-container {
            background: white;
            overflow: hidden;
            box-shadow: 0 2px 8px rgba(0,0,0,0.08);
            border: 1px solid var(--border-color);
            width: 100%;
        }
        
        /* 文件表格 */
        .page-download .files-table {
            width: 100%;
            border-collapse: collapse;
        }
        
        .page-download .files-table thead {
            background: var(--light-color);
        }
        
        .page-download .files-table th {
            padding: 18px 20px;
            text-align: left;
            font-weight: 600;
            color: #333;
            border-bottom: 2px solid var(--border-color);
            font-size: 0.95rem;
        }
        
        /* 操作列的表头居中 */
        .page-download .files-table th:last-child {
            text-align: center;
        }
        
        .page-download .files-table th:first-child {
            width: 60px;
        }
        
        .page-download .files-table th:nth-child(2) {
            width: 40%;
        }
        
        .page-download .files-table th:nth-child(3) {
            width: 20%;
        }
        
        .page-download .files-table th:nth-child(4) {
            width: 20%;
        }
        
        .page-download .files-table th:last-child {
            width: 20%;
        }
        
        .page-download .files-table td {
            padding: 18px 20px;
            border-bottom: 1px solid var(--border-color);
            vertical-align: middle;
        }
        
        .page-download .files-table tbody tr:last-child td {
            border-bottom: none;
        }
        
        .page-download .files-table tbody tr:hover {
            background: rgba(255, 182, 0, 0.05);
        }
        
        /* 文件类型图标 */
        .page-download .file-type-icon {
            width: 40px;
            height: 40px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.2rem;
            border-radius: 0px;
        }
        
        .page-download .file-type-icon.pdf {
            background: rgba(255, 182, 0, 0.1);
            color: var(--primary-color);
        }
        
        .page-download .file-type-icon.video {
            background: rgba(255, 182, 0, 0.1);
            color: #ffb600;
        }
        
        .page-download .file-type-icon.general {
            background: rgba(158, 158, 158, 0.1);
            color: #9E9E9E;
        }
        
        /* 文件信息 */
        .page-download .file-info {
            padding-left: 0;
        }
        
        .page-download .file-name {
            font-weight: 600;
            color: #333;
            font-size: 1.05rem;
            line-height: 1.4;
            margin-bottom: 6px;
        }
        
        .page-download .file-meta {
            display: flex;
            align-items: center;
            gap: 15px;
        }
        
        .page-download .file-tag {
            display: inline-flex;
            align-items: center;
            padding: 4px 10px;
            background: var(--light-color);
            font-size: 0.85rem;
            color: #666;
            border-radius: 0px;
        }
        
        .page-download .file-tag i {
            margin-right: 5px;
            font-size: 0.8rem;
        }
        
        /* 产品类型 */
        .page-download .product-cell {
            color: #333;
            font-weight: 500;
        }
        
        /* 资料类型 */
        .page-download .material-type-cell {
            color: #666;
            font-weight: 500;
        }
        
        /* 操作按钮 */
        .page-download .action-cell {
            text-align: right;
        }
        
        .page-download .action-buttons {
            display: flex;
            justify-content: flex-end;
            gap: 8px;
        }
        
        .page-download .action-btn {
            padding: 8px 16px;
            border: 2px solid var(--border-color);
            background: white;
            color: #666;
            cursor: pointer;
            font-size: 0.9rem;
            transition: all 0.2s ease;
            text-decoration: none;
            display: inline-block;
            border-radius: 0px;
        }
        
        .page-download .action-btn:hover {
            transform: translateY(-1px);
        }
        
        .page-download .action-btn.preview {
            color: #666;
        }
        
        .page-download .action-btn.preview:hover {
            border-color: var(--primary-color);
            color: var(--primary-color);
        }
        
        .page-download .action-btn.download {
            background: var(--primary-color);
            border-color: var(--primary-color);
            color: #333;
        }
        
        .page-download .action-btn.download:hover {
            background: var(--primary-dark);
            border-color: var(--primary-dark);
        }
        
        .page-download .action-btn:disabled {
            opacity: 0.5;
            cursor: not-allowed;
        }
        
        /* 空状态 */
        .page-download .empty-state {
            text-align: center;
            padding: 60px 20px;
        }
        
        .page-download .empty-icon {
            font-size: 3rem;
            color: #ddd;
            margin-bottom: 20px;
        }
        
        .page-download .empty-title {
            font-size: 1.3rem;
            color: #666;
            margin-bottom: 10px;
        }
        
        .page-download .empty-subtitle {
            color: #999;
        }
        
        /* 分页 */
        .page-download .pagination-wrapper {
            margin-top: 30px;
            text-align: center;
        }
        
        /* 视频预览弹窗样式 */
        .page-download .video-preview-modal .modal-content {
            border: 1px solid var(--border-color);
        }
        
        /* 移动端响应式设计 */
        @media (max-width: 1200px) {
            .page-download .files-table th,
            .page-download .files-table td {
                padding: 16px 18px;
            }
            
            .page-download .file-name {
                font-size: 1rem;
            }
        }
        
        @media (max-width: 992px) {
            .page-download .search-section {
                padding: 20px;
            }
            
            .page-download .filter-buttons {
                gap: 6px;
            }
            
            .page-download .filter-btn {
                padding: 8px 16px;
                font-size: 0.9rem;
            }
            
            .page-download .files-table th,
            .page-download .files-table td {
                padding: 15px;
            }
            
            .page-download .action-btn {
                padding: 6px 12px;
                font-size: 0.85rem;
            }
        }
        
        /* 平板设备响应式 */
        @media (max-width: 768px) {
            .page-download-wrapper .banner-area {
                height: 150px;
            }
            
            .page-download-wrapper .banner-title {
                font-size: 1.8rem;
                padding-bottom: 12px;
            }
            
            .page-download-wrapper .banner-title::after {
                height: 3px;
            }
            
            .page-download-wrapper .banner-description {
                font-size: 0.9rem;
            }
            
            .page-download .search-row {
                flex-direction: column;
                align-items: stretch;
                gap: 15px;
            }
            
            .page-download .search-input-wrapper {
                flex: none;
                width: 100%;
                min-width: auto;
            }
            
            .page-download .filter-buttons {
                width: 100%;
                justify-content: center;
                gap: 8px;
            }
            
            .page-download .filter-btn {
                flex: 1;
                min-width: calc(50% - 4px);
                text-align: center;
                padding: 10px 12px;
                font-size: 0.85rem;
            }
            
            /* 表格移动端适配 - 卡片式布局 */
            .page-download .table-container {
                background: none;
                box-shadow: none;
                border: none;
                overflow: visible;
            }
            
            .page-download .files-table {
                display: none; /* 隐藏桌面表格 */
            }
            
            /* 移动端卡片布局 */
            .page-download .mobile-file-cards {
                display: block;
            }
            
            .page-download .file-card-header {
                display: flex;
                align-items: center;
                margin-bottom: 15px;
                gap: 15px;
            }
            
            .page-download .file-card-info {
                flex: 1;
            }
            
            .page-download .mobile-file-name {
                font-weight: 600;
                color: #333;
                font-size: 1.1rem;
                line-height: 1.4;
                margin-bottom: 5px;
            }
            
            .page-download .file-card-details {
                display: grid;
                grid-template-columns: repeat(2, 1fr);
                gap: 15px;
                margin-bottom: 20px;
                padding: 15px 0;
                border-top: 1px solid var(--border-color);
                border-bottom: 1px solid var(--border-color);
            }
            
            .page-download .detail-item {
                display: flex;
                flex-direction: column;
            }
            
            .page-download .detail-label {
                font-size: 0.8rem;
                color: #999;
                margin-bottom: 5px;
            }
            
            .page-download .detail-value {
                font-size: 0.95rem;
                color: #333;
                font-weight: 500;
            }
            
            .page-download .mobile-action-buttons {
                display: flex;
                gap: 10px;
            }
            
            .page-download .mobile-action-btn {
                flex: 1;
                padding: 12px 16px;
                text-align: center;
                border: 2px solid var(--border-color);
                background: white;
                color: #666;
                cursor: pointer;
                font-size: 0.9rem;
                transition: all 0.2s ease;
                text-decoration: none;
                display: inline-block;
                border-radius: 0px;
            }
            
            .page-download .mobile-action-btn.preview {
                color: #666;
            }
            
            .page-download .mobile-action-btn.preview:hover {
                border-color: var(--primary-color);
                color: var(--primary-color);
            }
            
            .page-download .mobile-action-btn.download {
                background: var(--primary-color);
                border-color: var(--primary-color);
                color: #333;
            }
            
            .page-download .mobile-action-btn.download:hover {
                background: var(--primary-dark);
                border-color: var(--primary-dark);
            }
            
            .page-download .pagination-wrapper {
                margin-top: 20px;
            }
        }
        
        /* 手机设备响应式 */
        @media (max-width: 576px) {
            .page-download-wrapper .banner-area {
                height: 130px;
            }
            
            .page-download-wrapper .banner-title {
                font-size: 1.5rem;
                margin-bottom: 5px;
                padding-bottom: 10px;
            }
            
            .page-download-wrapper .banner-title::after {
                height: 2px;
            }
            
            .page-download .search-section {
                padding: 15px;
                margin-bottom: 20px;
            }
            
            .page-download .filter-buttons {
                display: grid;
                grid-template-columns: repeat(2, 1fr);
                gap: 8px;
            }
            
            .page-download .filter-btn {
                min-width: auto;
                width: 100%;
                padding: 10px 8px;
                font-size: 0.8rem;
            }
            
            .page-download .file-card {
                padding: 15px;
            }
            
            .page-download .file-card-details {
                grid-template-columns: 1fr;
                gap: 12px;
            }
            
            .page-download .mobile-action-buttons {
                flex-direction: column;
            }
            
            .page-download .mobile-action-btn {
                width: 100%;
            }
            
            .page-download .file-card-header {
                gap: 12px;
            }
            
            .page-download .mobile-file-name {
                font-size: 1rem;
            }
            
            .page-download .file-type-icon {
                width: 36px;
                height: 36px;
                font-size: 1.1rem;
            }
        }
        
        @media (max-width: 375px) {
            .page-download-wrapper .banner-area {
                height: 120px;
            }
            
            .page-download-wrapper .banner-title {
                font-size: 1.3rem;
            }
            
            .page-download-wrapper .banner-description {
                font-size: 0.8rem;
            }
            
            .page-download .search-input-wrapper input {
                padding: 10px 45px 10px 15px;
                font-size: 0.9rem;
            }
            
            .page-download .search-icon-btn {
                width: 45px;
                font-size: 1rem;
            }
            
            .page-download .filter-buttons {
                grid-template-columns: 1fr;
                gap: 6px;
            }
            
            .page-download .file-card {
                padding: 12px;
            }
            
            .page-download .mobile-file-name {
                font-size: 0.95rem;
            }
            
            .page-download .detail-label {
                font-size: 0.75rem;
            }
            
            .page-download .detail-value {
                font-size: 0.9rem;
            }
        }
        
        /* 触摸设备优化 */
        @media (hover: none) and (pointer: coarse) {
            .page-download .action-btn:hover,
            .page-download .mobile-action-btn:hover {
                transform: none;
            }
            
            .page-download .search-icon-btn {
                min-height: 44px;
            }
            
            .page-download .filter-btn {
                padding: 12px 16px;
            }
            
            .page-download .action-btn,
            .page-download .mobile-action-btn {
                padding: 12px 20px;
                font-size: 1rem;
            }
            
            .page-download .files-table tbody tr:hover {
                background: transparent;
            }
        }
        
        /* 平板优化 */
        @media (min-width: 577px) and (max-width: 768px) {
            .page-download .file-card-details {
                grid-template-columns: repeat(2, 1fr);
            }
            
            .page-download .mobile-action-buttons {
                flex-direction: row;
            }
        }
        
        /* 防止内容溢出 */
        .page-download {
            overflow-x: hidden;
        }
        
        /* 移动端modal优化 */
        @media (max-width: 768px) {
            .page-download .video-preview-modal .modal-dialog {
                margin: 10px;
                max-width: calc(100% - 20px);
            }
            
            .page-download .modal-header {
                padding: 12px 15px;
            }
            
            .page-download .modal-body {
                padding: 0;
            }
            
            .page-download .modal-title {
                font-size: 1rem;
            }
        }
        
        /* 桌面端保持表格布局 */
        @media (min-width: 769px) {
            .page-download .mobile-file-cards {
                display: none;
            }
            
            .page-download .files-table {
                display: table;
            }
        }